A lock body for a sliding door

By designing a combined structure of lock body, lock base, lock cylinder, dial and slider, the problems of large size and unsightly installation of sliding door lock bodies are solved, and the bolt can be moved horizontally within a limited space, providing beautiful and reliable locking and unlocking functions.

CN224591941UActive Publication Date: 2026-08-043H INC +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
3H INC
Filing Date
2025-06-17
Publication Date
2026-08-04

AI Technical Summary

Technical Problem

Existing sliding door locks are bulky, unsightly to install, and may damage the appearance of the door.

Method used

Design a lock body structure that includes a lock body, lock base, lock cylinder, dial, slider, and latch. The lock cylinder rotates to drive the slider to move left and right, thereby locking or unlocking the bolt. A conical spring and a limiting step are combined to ensure reliability and aesthetics.

Benefits of technology

It enables the bolt to slide within a limited space, providing a beautiful and reliable door lock effect. It is suitable for both left and right sides and does not require differentiation between left and right styles.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a lock body for sliding door, including lock body and lock seat, the lock body includes base, lock core, dial, sliding block and lock catch, through the rotation of lock core, and then link finally drive the left and right movement of sliding block to the lock tongue head portion of resisting or loosening, make the lock tongue head portion and one side lock seat cooperation lock or open. Through in limited space, realize the translation of sliding block driven by the rotation of lock tongue, realize the opening or closing state of door lock. The lock body is beautiful and reliable, left and right general, need not subdivide left and right.
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Description

Technical Field

[0001] This utility model relates to the field of door and window technology, specifically to a lock body for sliding doors. Background Technology

[0002] Traditional sliding doors, especially frameless sliding doors, often use bottom-to-top bolt-type locks, which have drawbacks such as large size and unsightly installation. Locks installed on the door leaf, on the other hand, would detract from the overall appearance of the door. Summary of the Invention

[0003] To address the aforementioned technical problems, this utility model provides a lock body for sliding doors, achieving both an aesthetically pleasing and reliable door lock effect.

[0004] To solve the above-mentioned technical problems, the present invention provides a lock body for a sliding door, comprising a lock body and a lock base. The lock body includes a base, a lock cylinder, a dial, a slider, and a latch. A latch is mounted on the lock cylinder. The dial is mounted on a protrusion on the base and can rotate around the protrusion. The latch engages with a recess on one side of the dial. One side of the dial engages with a groove on the slider via the protrusion. The latch is located on the other side of the slider. A cylinder is located in the middle of one side of the latch. The cylinder is inserted into a circular groove in the base, allowing the latch to rotate around the axis of the cylinder. The bottom surface of the slider abuts against the top surface of the latch. The rotation of the lock cylinder, in turn, drives the slider to move left and right, thereby abutting or releasing the latch, allowing the latch to engage with the lock base on one side to lock or unlock.

[0005] A conical spring is installed on the base, and the top of the conical spring abuts against the tail of the latch.

[0006] The base has limiting steps on its left and right sides relative to the slider.

[0007] The slider is connected to a switch, which drives the slider to move left and right.

[0008] The slider has a blind hole, and a steel ball spring and a steel ball are installed in the blind hole. The base has a convex corner corresponding to the position of the steel ball.

[0009] A panel is provided on one side of the base.

[0010] The slider is equipped with a sealing plate.

[0011] The sealing plate is provided with a decorative cover or a lock cylinder cover.

[0012] The beneficial effects of this utility model are as follows: Unlike existing technologies, this utility model provides a lock body for sliding doors, including a lock body and a lock base. The lock body includes a base, a lock cylinder, a dial, a slider, and a latch. Rotation of the lock cylinder or a toggle switch, in turn, drives the slider to move left or right, thereby abutting or releasing the latch bolt, allowing the latch bolt to engage with one side of the lock base to lock or unlock. By achieving the opening or closing of the door lock within a limited space, the latch bolt rotates, driving the slider to move horizontally. This lock body is aesthetically pleasing and reliable, and is universally compatible with both left and right sides, eliminating the need for left / right distinctions. Attached Figure Description

[0013] Figure 1 This is an exploded view of a lock body used for sliding doors;

[0014] Figure 2 This is a first schematic diagram of the lock body assembly for a sliding door;

[0015] Figure 3 This is a second schematic diagram of the lock body assembly for a sliding door;

[0016] Figure 4 This is a second schematic diagram of the lock body assembly for a sliding door;

[0017] Figure 5 This is the third schematic diagram of the lock body assembly for a sliding door;

[0018] Figure 6 This is a schematic diagram of the first cross-section of a lock body used for sliding doors;

[0019] Figure 7 This is a schematic diagram of the second cross-section of a lock body used for sliding doors;

[0020] Figure 8 This is a schematic diagram of the overall assembly of the lock body used for sliding doors;

[0021] Figure 9 This is a schematic diagram of the third cross-section of the lock body in the open state;

[0022] Figure 10 This is a schematic diagram of the fourth cross-section of the lock body and lock seat in the state of just contact.

[0023] Figure 11 This is a schematic diagram of the fifth cross-section of the lock body in the locked state;

[0024] Figure 12 This is a schematic diagram of the latch structure;

[0025] Figure 13 This is a schematic diagram of the dial structure;

[0026] Figure 14 This is a schematic diagram of a lock body application scenario.

[0027] The following are the labels in the diagram: 1. Base; 2. Lock; 3. Slider; 4. Dial; 5. Ball spring; 6. Ball; 7. Conical spring; 8. Edge sealing; 9. Switch; 10. Panel; 11. Decorative cover; 12. Lock base; 13. Lock cylinder cover; 14. Lock cylinder; 15. Lock tongue; 16. Profile; 110. Protruding post; 111. Round groove; 112. Protruding corner; 113. Limiting step; 21. Cylinder; 31. Strip groove. Detailed Implementation

[0028] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] Please see Figures 1-14 These figures are schematic diagrams of the structure and components of the lock body for a sliding door according to this utility model. As shown, this utility model embodiment provides a lock body for a sliding door, the overall structure of which includes a lock body and a lock base 12. The lock body includes a base 1, a lock cylinder 14, a dial 4, a slider 3, and a latch 2. A latch tongue 15 is installed on the lock cylinder 14. The dial 4 is installed on a protrusion 110 of the base 1 and can rotate around the protrusion 110. The latch tongue 15 engages with a recess on one side of the dial 4. One side of the dial 4 passes through... The protruding post 110 engages with the strip groove 31 of the slider 3. The latch 2 is located on the other side of the slider 3. A cylinder 21 is provided in the middle of one side of the latch 2. The cylinder 21 is inserted into the circular groove 111 of the base 1 so that the latch 2 can rotate around the axis of the cylinder 21. The bottom surface of the end of the slider 3 abuts against the top surface of the latch 2. The rotation of the lock cylinder 14 causes the slider 3 to move left and right in a linkage manner, thereby abutting or releasing the head of the latch tongue 15, so that the head of the latch tongue 15 engages with the lock seat 12 on one side to lock or open.

[0031] Based on this lock body structure design, the recess on the dial engages with the protrusion on the base, allowing the dial to rotate around the protrusion. The protrusion on the dial engages with the slot on the slider. As the lock cylinder rotates, the bolt follows suit. When the dial rotates due to the bolt, it causes the slider to move left and right, causing one end of the slider to abut or release the latch, thus locking or unlocking the door. Within a limited space, the lock cylinder rotates, which in turn moves the slider, achieving an aesthetically pleasing and reliable door lock effect.

[0032] In one possible implementation, a conical spring 7 is installed on the base 1, with the top of the conical spring 7 abutting against the tail of the latch 2.

[0033] When in contact with the lock seat, the latch head is lifted and the latch tail compresses the conical spring (the latch contact ensures that the lock seat can pass under the latch head). As the lock seat goes deeper, the latch will reverse due to the elastic force of the conical spring and sink into the groove of the lock seat, and can move back and forth repeatedly.

[0034] Because a section of the cylinder on the latch is inserted into the circular groove of the base, the latch can rotate around the axis. The conical spring installed on the base will push up the tail of the latch, and the head of the latch will resist the limiting protrusion of the base because the tail is lifted, keeping the whole horizontal and preventing the latch from contacting the slider and generating additional friction.

[0035] In one possible implementation, a switch 9 is connected to the slider 3 so that the slider 3 can be moved left and right by the switch 9.

[0036] The switch design provides an alternative way to move the slider left and right without using a lock cylinder. When the switch is activated, the slider moves towards the latch. When the slider reaches its position, it blocks the latch head, preventing it from lifting and creating a locking mechanism with the lock seat.

[0037] In one possible implementation, the base 1 is provided with limiting steps 113 on the left and right sides relative to the slider 3.

[0038] In one possible implementation, the slider 3 has a blind hole, and a steel ball spring 5 and a steel ball 6 are installed inside the blind hole. The base 1 has a convex angle 112 corresponding to the position of the steel ball 6.

[0039] The base has limiting steps on both the left and right sides of the slider to ensure the horizontality of the slider when it moves left and right. There is a blind hole at the bottom, which contains a steel ball spring and steel ball. Together with the convex corner on the base, it generates a restoring force when moving left and right.

[0040] In one possible implementation, a panel 10 is provided on one side of the base 1.

[0041] In one possible implementation, a sealing plate 8 is provided on the slider 3.

[0042] In one possible implementation, the sealing plate 8 is provided with a decorative cover 11 or a lock cylinder cover 13, with the lock cylinder cover 13 disposed on the lock cylinder 14.

[0043] In practical applications, to accommodate two or more sliding doors, the lock cylinder cover and decorative cover are interchangeable. The lock cylinder is installed inside the lock cylinder cover, while the decorative cover is not fitted with the lock cylinder. In multi-panel sliding door scenarios, the door panel facing outwards has the lock cylinder cover installed, while the door panel facing inwards has the decorative cover installed.

[0044] In this invention, the recess on the dial engages with the protrusion on the base, allowing the dial to rotate around the protrusion. The protrusion on the dial engages with the groove on the slider. When the dial is rotated by the latch, it can move the slider left and right. Similarly, when the switch moves the slider left and right, it will also rotate the dial.

[0045] The closed state is achieved by the action of the switch or the lock cylinder. The slider will move towards the latch under the action of the switch or the dial. When the slider moves to the position, it will block the latch, preventing the latch head from lifting and forming a locking structure with the lock seat.

[0046] The above detailed description of the lock body for sliding doors, in conjunction with the accompanying drawings, explains that this utility model's lock body for sliding doors includes a lock body and a lock base. The lock body includes a base, a lock cylinder, a dial, a slider, and a latch. Rotation of the lock cylinder, in turn, drives the slider to move left and right, thereby abutting or releasing the latch bolt, allowing the latch bolt to engage with one side of the lock base to lock or unlock. By achieving the opening or closing of the door lock through the rotation of the latch bolt driving the slider's translation within a limited space, the lock body is aesthetically pleasing, reliable, and versatile (left or right), eliminating the need for left / right distinctions.

[0047] When the slider moves horizontally, it can also achieve the reset function through the triangular protrusion of the base. Furthermore, when the latch is in the closed state and is opened by external force, the latch will lift up and press against the slider. The slider is subjected to a vertical upward force, and its resistance to damage is equivalent to the material's resistance to destructive stress, making it sturdy and reliable.

[0048] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A lock body for a sliding door, characterized in that, The lock body includes a lock body and a lock base. The lock body includes a base, a lock cylinder, a dial, a slider, and a latch. A latch is installed on the lock cylinder. The dial is mounted on a protrusion on the base and can rotate around the protrusion. The latch engages with a recess on one side of the dial. One side of the dial engages with a slot on the slider through the protrusion. The latch is located on the other side of the slider. A cylinder is provided in the middle of one side of the latch. The cylinder is inserted into a circular groove in the base so that the latch can rotate around the axis of the cylinder. The bottom surface of the slider abuts against the top surface of the latch. The rotation of the lock cylinder drives the slider to move left and right, thereby abutting or releasing the latch, so that the latch engages with the lock base on one side to lock or unlock.

2. The lock body for a sliding door according to claim 1, characterized in that, A conical spring is installed on the base, and the top of the conical spring abuts against the tail of the latch.

3. The lock body for a sliding door according to claim 1, characterized in that, The base is provided with limiting steps on the left and right sides relative to the slider.

4. The lock body for a sliding door according to claim 1, characterized in that, A switch is connected to the slider, which drives the slider to move left and right.

5. The lock body for a sliding door according to claim 1, characterized in that, The slider has a blind hole, and a steel ball spring and a steel ball are installed in the blind hole. The base has a convex corner corresponding to the position of the steel ball.

6. The lock body for a sliding door according to claim 1, characterized in that, A panel is provided on one side of the base.

7. The lock body for a sliding door according to claim 1, characterized in that, The slider is equipped with a sealing plate.

8. The lock body for a sliding door according to claim 7, characterized in that, The sealing plate is provided with a decorative cover or a lock cylinder cover.